“[A] quotation is a handy thing to have about, saving one the trouble of thinking for oneself, always a laborious business."

Sometimes people make things that already exist for practice, rather than to have the thing itself.

Does that make it more clear for you? Or do you want to troll some more?

It was clear to begin with, thanks, it's just wrong.

Practice does not make perfect, perfect practice makes perfect. If you practice doing things wrong, you're just reinforcing a bad habit.

And make no mistake: solving solved problems and losing focus on the problem you set out to solve are bad habits, every bit as bad as writing code that segfaults or leaks memory or throws exceptions.